Desculpe, não existe esse recurso, encontrei este conselho:
The common suggestion is to use a shared "GNU Screen" session:
http://groups.google.com/group/vim_use/browse_thread/thread/f502e7783038d484/c4603374d2e752b2
to do collaborative editing in Vim. However, it's a bit tricky because it's modal, so if one person changes modes, the other person has to adapt accordingly.